Question: 1. Analyze and compare the central tendency, shape and spread of COMB (mpg) for each vehicle class (i.e., the SUVs and minivans). Investigate if there
1. Analyze and compare the central tendency, shape and spread of COMB (mpg) for each vehicle class (i.e., the SUVs and minivans). Investigate if there were any outliers.
- Use the text boxes provided for your analysis. This applies to all answers.
- Use bullet points.
2. Construct histograms for COMB (mpg) for each vehicle class. How do you compare them with your findings in Q2?
3. Test whether the COMB (mpg) for SUVs and minivans are significantly different at the 5% level of significance.
a. Develop the appropriate hypotheses and perform the test.
b. What is your conclusion based on your test result?
Investigate the relationship between COMB (mpg) and CO2 Emissions (g/km) for both the vehicle classes.
aConstruct and interpret the scatterplot to show how changes in COMB (mpg) changes CO2 Emissions (g/km). Show the regression equation and R2 on the plot.
b. (Generate the regression output.
c. Analyze the slope, the correlation coefficient and coefficient of determination. Use bullet points.
d. Interpret the estimation equation.
e. Perform the test to conclude if the linear model describes the relationship between COMB (mpg) and CO2 Emissions (g/km) for both the vehicle classes.
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